Louis andee



L. ANDERFUHREN.

PNEUMATIC TIRE SHJN/QL.

APPLICATION $1 .20 iUL'a as.

Patented Dec. 2,1319,

2 SHEETSSHEET 1.

I mh K w- ATTORNEY.

ANDERFUHRENP PNEUMATIC TIRE SIGNAL.

APPu'cAnou man JULY 26. 1919.

1,323,807. Patented DecQQ, 1919;

' 2 SHEETS-SHEET 2.

INVENTOR.

4 6&4 aw

- Louis snnnnrunnnn, orrenrrrsonn, RYLAND;

1 runnerArIc-rmn srensn T at! rwlwm it may concern:

a citizen of the United States, residingat Baltimore, State of Maryland, have invented certain new and useful Improvements-m lowing is a specification,

This invention relates to devices applicable to pneumatic vehicle tires, and designed to automatically give notice to the driver when the tire has become deflated from a puncture or other cause.

The invention has for its object to provide a novel and improved audible signal device which is sounded when deflation of the tire .occurs, and also to provide a device oiithis kind which'is comparatively simple in con- 7 struction, and which can be readily attached to the wheel equipped with the tire.

a combination and arrangement of parts to be hereinafter described and claimed, and in order that the same may .be better under stood, reference is had to the accompanying drawing forming aipart of this specification.

In the drawing Figure 1 is a view in transverse section of an automobile tire and rim' with the signal attached thereto. v 4

Fig. 2 is an elevation of the device. Fig.3 is a fragmentary longitudinal section. v w 1 Fig. 4 is a section on: line 4- 1 of Fig. 3. Fig; 51isja detail. sectionalview of the j as clapper operating cam.

Fig fi is a modified form of clutch used 1n conwnction" with the device;

Referring specifically to the drawing, 10j

denotes a pneumatietire which is carried by as the usual rim11 mounted on the folly 12 of the wheel." 'The construction of these parts is immaterial to the'presentinvention, and a detailed description'thereof is there-. fore not necessary. The invention is applii ss cable to any standardmotor vehicle wheel equipped with a pneumatic tire, and' no. change in the structure of the wheelor the tire, is necessary.

.The supporting memberof the signal deviceis a U-shaped clamp 13.w'hich -15 fitted over the folly 12 to seat against thesides and the inner surface thereof, and fastened to the fellyhy a screw It To this clamp isiriv'eted Specification of Letters Yatent. Application filed July 26, 1919. Serial Ito. 818,583

The object stated is attained by'means of Patented nee-2, 1919.

' s or otherwise secured abracket member hav Be it known that I, LOUIS ANDEBFUHREN,

bolt 17 which projects from the arm 15, and

is fitted between the latter and the arm 16 Pneumatic-Tire Signals, of which the folwith a spacing sleeve18.

The bracket arm. 15 carries abell 19 or 'ter swings to carry the clapper 20 toward the bell 19, and before the clapper touches the bell, and as the stem 21 is resilient. the latter is fiexed'and' the clapper strikes the bell to sound the same. The following mechanism is provided for sounding the bell.

Alongside thefelly 12 and the 11 is mounted a controlling bar 27 which is positioned radially with respect to the {Wheel and has its outer end normally positioned close to one side of the tire IO near'the rim. The bar 27 is adjustably connected to a member 28 in the form of a bar which is loosely connected near its inner end to one side of the clamp 13, by a link29'. The bar 27' is made 7 fast to the bar 28 by a screw 29', the former. I

being slotted, as shown at'30 to seat the screw and also a guide pin 31 extending from the bar 28., By providing-the slot 30, 9b v the bar 27 can be adjusted radially with respect to the wheel, and thus properl pos'ii 'tioned with respect to difierent size tires.

spring. as shown at 33; One end .of this 'spring'is anchored to an arm 34 extending from'the shaft 32,.andthe other spring end is bent out to press-against an arm 35 six-1 B tending from the hub 24. and force the lat ter against the stop 26. The shaft 32 also of this hub has two diametrically opposite .isof course free to turn in the opposite diable by a cams or .wipers39f and the other end has a trically with respectv to the axis'of the shaft,

and between its periphery and the wall of the housing is located a ball 43. It ,will therefore beseen that the motion bf the shaft 32, in' one direction, is transmitted to the hub 38 and its cams 39 by the wedging action of the ball 43 between the disk 42 and the wall of the housing 40. The shaft rection without turning the hub 38.

The hub 24 of the clapper stems21 has a laterally extending arm 44 which is postioned to engage the cams 39. This arm normally seats on the highest point of one of the cams, and in. this position it holds the clapper stem retracted, with the hub 24 thereof spaced from the stop 26. The spring 33 is also now tensioned and pressing against the arm in a direction to ad- Vance the clapper stem. If now the shaft '32is turned sufficiently. to swing the cam 39 clear of the arm 44, the clapper stem is released. and the bell is sounded. The shaft continues to turn until the next cam reaches the arm 44 and retracts the clapper stem,

actuation.

The shaft 32 and 28 when the tire 10 becomes deflated to such an extent that the bar 27 comes in contact therewith; At every revolution of the wheel, when-the bar is pointing down to the.

ground and the tire is being flattened out, said bar, with the bar 28, is forced inwardly to rock the shaft 32, with the result hereinbefore described.

'- The housing cap 41 is held seated by a spring pressed arm 45 carried by the end of the bolt '17 projecting from the bracket arm 15.

-' Fig. 6 shows a slightly modified form of clutch associated with the shaft 32, a ratchet.

clutch being provided. The ratchet teeth 46 are on the housing 40 and they are engagepawl 47 'Whiclnis carried by an 4 arm 48 on the shaft and is held against vthe .atchet teeth by a spring 49.

x I claim:

is actuated by. the bars 27- I porting mem The freguemynf the sounds emitted by at amoderate speed will cause the bell to i sound every few seconds.

A much deflated tire, under the same conditions, will cause the bell to sound at-more frequent intervals,

and the bell will sound no matter how slow the wheel turns.

The device is not liable to injury by dirt and road conditions, and it can be readily cleaned. Only one screw is housing 40 closed at its outer end by a cap 41.. The shaft 32 passes loosely throughthei' hub 38 and extends into the housing 40',[and in the latter it is formed with a periphef ru grooved disk 42. This disk is located west;

required to attach the device to' the wheel and it is so located on the wheel that it does not interfere with the removal or mounting of the tire.'

1. A tire alarm device, comprising a supporting member having means for attachment to a wheel, a bell, a clapper'for the bell having a pivoted stem, a-cam for holding the clapper stem retracted, a, spring for advancing the clapper stem, a rotatable member carrying the cam, a rock shaft, a clutch for coupling the shaft to the rotatable member, an actuating member for. the shaft, and means for supporting the actuating member alongside a tire. and radially with respect to the wheel.

2. Atire alarm porting member having means for attac ment to a wheel, a bell, a clapper for the bell having a pivoted stem, a cam for holding the clapper'stem retracted, a spring for device, comprising a supadvancing the clapper stem, a rotatable member carrying the cam, arock shaft, a

clutch for coupling the shaft to the rotatable member, an arm extending from the shaft,

and an actuator for the shaft connected to the-arm and extending alongside the tire and radially with respect to the wheel.

3. A tire alarm device, comprising a supporting member having means for attachment to a wheel, a bell, a clapper for the bell having a pivoted stem, a camfor holding the clapper stem retracted, a spring for admember carrying the cam. a rock shaft, a a

clutch for coupling the shaft to the rotatable member, an arm extending from the shaft,

and an actuator for the shaft linked to the.

aforesaid suppo ting member and; connected to the arm, said actuator extend1ng,alongside the tire and radially with 'respect to the no vancing the clapper stem, a rotatable:

Lessee? an actuator for the shaft linked to the afore- In testimony whereof I affix m signature sixlid supportialg member and efnnected t0 in the presence of two witnesses.

t e arm, sai I actuator exten ing eoragr v side'the tire and radiall N with respect to v LOUIS ANDERFUHREN 5 the Wheel, and having a, ihngitudin'ally ad-- Witnesses:

'ustable extension at itsouter end engage E. WALTON BmwmGT01g,

able by the tire when the latter is deflated. HOWARD D. Amuse 

